Three Alpha Series Bar Feeders from LNS Offer Rigidity and Simplicity

Originally titled 'Three Alpha Series Bar Feeders Offer Rigidity and Simplicity'

The Alpha ST320 S2 from LNS is an automatic magazine bar feeder for sliding headstock turning machines that combines simplicity of design and operation with reliability.

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The Alpha ST320 S2 from LNS is an automatic magazine bar feeder for sliding headstock turning machines that combines simplicity of design and operation with reliability. Alpha ST320 S2 loads barstock diameters from 1/8” to 0.787” (3 mm to 20 mm, 25 mm with bar preparation) and bar lengths from 39” to 12 ft. (12 ft., 6” maximum).

The Alpha ST212 S2 is an automatic magazine bar feeder for sliding headstock turning machines with a dual directional screw loading mechanism for bar loading and feeding of bar diameters from 0.078” to 0.470” (2 mm to 12 mm) and bar length from 39” to 12 ft. (12 ft., 6” maximum. Both bar feeders share a number of characteristics including a one-piece, extruded, durable aluminum profile guiding frame mounted on a solid steel structure integrating the drive chain and channel cover for more rigidity and improved performance throughout the entire diameter range.
Both machines include an automatic, two-position, pneumatically actuated hydrostatic front stabilizer with V-shaped guiding elements to dampen residual vibrations between the bar feeder and the turning machine.

A self-centering vise eliminates setup errors and provides optimum gripping force for remnant extraction, and setup takes only one minute by entering shape, diameter and feed-out length into the lightweight, ergonomic HMI. LNS “3-S” headstock synchronization for very small bars and soft material is standard on Alpha ST212 S2 and optional for Alpha ST320 S2. Partial change-overs take only 2 minutes, while complete change-overs take only 8 minutes.

The Alpha SL65 S is a short loader for bars with diameters from ¼” to 2 5/8” (6 mm to 67 mm) and lengths from 12” to 61” (300 mm to 1,550 mm, not to exceed the overall spindle length). This short loader includes the LNS Soft Touch loading system using a servomotor that automatically adjusts speed, torque, acceleration and deceleration to allow travel and positioning at high speeds. It automatically feeds to length without losing contact between the pusher and the barstock.

The Alpha SL65 S bar feeder is equipped with three pushers (6 mm, 12 mm and 19 mm), a self-contained 26” (660 mm) magazine tray that allows for long production runs and unattended operation, and standard X axis and optional Z-axis retraction for E-Z change spindle liners change-overs and machine maintenance.

Users can set up Alpha SL65 S in 1 minute by entering shape, diameter and feed-out length into the lightweight, ergonomic HMI and feed with or without turret assistance and subspindle applications. Partial change-overs take less than five minutes.